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1, the application
Professional for power station design, can satisfy 300000, 600000 kw generators and auxiliary engine temperature measurement needs.Direct measurement in the process of various production - 200 ° C to 800 ° C range of liquid, steam and gas medium, as well as solid surface temperature.
2, work principle,
The thermocouple electrode is composed of two different conductor material.When measuring the temperature difference is with the reference, the can produce thermoelectric power, the instrument will show thermoelectric potential corresponding temperature value.
Thermal resistance is the use of the material when the temperature changes, its resistance also along with the change of characteristics to measure temperature.When resistance changes, the work shows the temperature resistance of the meter.
3, the main technical parameters
Product standards
IEC584
IEC751
IEC1515
JB/T18622-1997
JB/T8623-1997
GB/T16839-1997
4, measurement range and tolerance
| Type no. | Degree, | Tolerance level | |||
| I | II | ||||
| Tolerance values | Temperature measurement range ° c. | Tolerance values | Temperature measurement range ° c. | ||
| WRN | K | ±1.5°C | - 40 ~ + 375 | ±2.5 °C | - 40 ~ + 333 |
| ±0.004ltl | 375 ~ 1000 | ±0.0075 ltl | 333 ~ 1200 | ||
| WRM | N | ±1.5°C | - 40 ~ + 375 | ±2.5°C | - 40 ~ + 333 |
| ±0.004 ltl | 375 ~ 1000 | ±0.0075 ltl | 333 ~ 1200 | ||
| WRE | E | ±1.5°C | - 40 ~ + 375 | ±1.5°C | - 40 ~ + 333 |
| ±0.004 ltl | 375 ~ 800 | ±0.004 ltl | 333 ~ 900 | ||
| WRF | J | ±1.5°C | - 40 ~ + 375 | ±1.5°C | - 40 ~ + 333 |
| ±0.004 ltl | 375 ~ 750 | ±0.004 ltl | 333 ~ 750 | ||
| WRC | T | ±1.5°C | - 40 ~ + 125 | ±1°C | - 40 ~ + 133 |
| ±0.004 ltl | 125 ~ 350 | ±0.0075 ltl | 133 ~ 350 | ||
5, room temperature insulation resistance
Thermal resistance at ambient temperature for 15-35 ° C, relative humidity is not more than 80%, test voltage for 10-100 - v (dc) electrode and outer casing of the insulation resistance between > 100 m Ω.
Thermocouple in the environmental temperature is 20 + 15 ° C, relative humidity is not more than 80%, test voltage for 500 + 50 v (dc) electrode and > 1000 Ω insulation resistance between the outer casing. M
